George Zimmerman had not lived at the house in Lake Mary, Fla., since 2006, though his named remained on the title until 2008, the suit states.

Zimmerman's parents accused Barr of knowing her tweets were "an open and obvious call for vigilante justice" and intending "to cause a lynch mob to descend" on their home, which they bought in 2001

They also allege that she violated Twitter's terms of service by publishing personal information without their consent.

Barr's conduct "went beyond all possible bounds of decency and is utterly intolerable in a civilized community," the suit contends.

The Zimmermans claim they were "forced to flee their home as a direct result" of Barr's tweets and "have not been able to return to live in the house." But the Orlando Sentinel reported that Robert Zimmerman had told the newspaper March 15, 2012, that he and his wife had already moved out because of death threats after their son shot the 17-year-old Trayvon during a struggle Feb. 12.

The Zimmermans are seeking an unspecified amount more than $15,000 for emotional distress and invasion of privacy.